From 1f5554c5c7ed7e705a3b605cde4b1980cb2382bf Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Sun, 24 Oct 2010 20:59:25 +0000
Subject: [PATCH] (svn r21035) -Fix [FS#4181] (r21020): crash when opening the
 buoy's viewport. Based on a patch by Krille.

---
 src/waypoint_gui.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/waypoint_gui.cpp b/src/waypoint_gui.cpp
index b05172468e..070e4eea7d 100644
--- a/src/waypoint_gui.cpp
+++ b/src/waypoint_gui.cpp
@@ -46,7 +46,11 @@ private:
 	 */
 	TileIndex GetCenterTile() const
 	{
-		return this->wp->IsInUse() ? this->wp->train_station.GetCenterTile() : this->wp->xy;
+		if (!this->wp->IsInUse()) return this->wp->xy;
+
+		TileArea ta;
+		this->wp->GetTileArea(&ta, this->vt == VEH_TRAIN ? STATION_WAYPOINT : STATION_BUOY);
+		return ta.GetCenterTile();
 	}
 
 public: